diff --git a/fs/incfs/Kconfig b/fs/incfs/Kconfig
index d860c07664c3..a655d599ea46 100644
--- a/fs/incfs/Kconfig
+++ b/fs/incfs/Kconfig
@@ -4,6 +4,7 @@ config INCREMENTAL_FS
 	select DECOMPRESS_LZ4
 	select CRC32
 	select CRYPTO
+	select CRYPTO_RSA
 	select CRYPTO_SHA256
 	select X509_CERTIFICATE_PARSER
 	select ASYMMETRIC_KEY_TYPE
diff --git a/tools/testing/selftests/filesystems/incfs/.gitignore b/tools/testing/selftests/filesystems/incfs/.gitignore
new file mode 100644
index 000000000000..4cba9c219a92
--- /dev/null
+++ b/tools/testing/selftests/filesystems/incfs/.gitignore
@@ -0,0 +1 @@
+incfs_test
\ No newline at end of file
diff --git a/tools/testing/selftests/filesystems/incfs/Makefile b/tools/testing/selftests/filesystems/incfs/Makefile
index 7cff78cf5131..1f13573d3617 100644
--- a/tools/testing/selftests/filesystems/incfs/Makefile
+++ b/tools/testing/selftests/filesystems/incfs/Makefile
@@ -5,6 +5,8 @@ CFLAGS += -I../../../../include/uapi/
 CFLAGS += -I../../../../lib
 
 EXTRA_SOURCES := utils.c
+CFLAGS += $(EXTRA_SOURCES)
+
 TEST_GEN_PROGS := incfs_test
 
 include ../../lib.mk